Microstructure-permeability relation of porous β-Si3N4 ceramics

被引：24

作者：

Topates, Gulsum ^{[1
]}

Mammitzsch, Lars ^{[2
]}

Petasch, Uwe ^{[2
]}

Adler, Joerg ^{[2
]}

Kara, Ferhat ^{[1
]}

Mandal, Hasan ^{[3
]}

机构：

[1] Anadolu Univ, Dept Mat Sci & Engn, TR-26480 Eskisehir, Turkey

[2] Fraunhofer Inst Ceram Technol & Syst IKTS, D-01277 Dresden, Germany

[3] Sabanci Univ, Mat Sci & Engn Programme, TR-34956 Istanbul, Turkey

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2013年 / 33卷 / 09期

关键词：

Si3N4; Structural applications; Microstructure; Porosity; Permeability; SILICON-NITRIDE CERAMICS; GRAIN-GROWTH; MECHANICAL-PROPERTIES; FABRICATION; SI3N4; PERFORMANCE; MEMBRANES; POROSITY; DAMAGE; FLOW;

D O I：

10.1016/j.jeurceramsoc.2012.12.022

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous beta-Si3N4 ceramics with two distinct structures were produced by using two different Si3N4 sources to investigate the relationship between microstructure and permeability. Results showed that regardless of pore amount, size of pore channels, shape-distribution of beta-Si3N4 grains are more effective on permeability of porous Si3N4 ceramics. Higher permeability and lower contribution of inertial forces was obtained by microstructure consists of coarse and equiaxed grains even at lower porosity amount. Calculated Forchheimer number (F-o) and measured the local breadth of a pore also supported the effect of microstructure on permeability. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1545 / 1551

页数：7

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